diff --git a/lab0510/lab0510.md b/lab0510/lab0510.md
index e5bb0d2e28e7ae652154b0380f63657d57bb1e42..cd3d8f7d53ecb0daf276045e3e8390c5dc3029c2 100644
--- a/lab0510/lab0510.md
+++ b/lab0510/lab0510.md
@@ -6,3 +6,4 @@
 
 * br_a : edited at ssh.ajousw.kr
 * br_a : 2nd change
+* br_a : 3rd change